as part of pre- operative or pre-procedural evaluations for asymptomatic patients with low perioperative risk of death or myocardial infarction. Even for CAD patients, ECG is mainly for baseline comparison in OR but won’t predict complications. American Society of Anesthesiologists Don’t obtain baseline diagnostic cardiac testing (trans-thoracic/esophageal echocardiography – TTE/TEE) or cardiac stress testing in asymptomatic stable patients with known cardiac disease (e.g: CAD, valvular disease) undergoing low or moderate risk non-cardiac surgery. The Society of Thoracic Surgeons Patients who have no cardiac history and good functional status do not require preoperative stress testing prior to non-cardiac thoracic surgery. American Society of Echocardiography Avoid echocardiograms for preoperative/perioperative assessment of patients with no history or symptoms of heart disease.